[PATCH 4/5] PCI: i386: fixup for Siemens Nixdorf AG FSC Multiprocessor Interrupt Controllers
From: Ivan Kokshaysky <[EMAIL PROTECTED]>
Wolfgang gets:
PCI: Cannot allocate resource region 0 of device :00:04.0
PCI: Error while updating region :00:04.0/0 (a8008000 != fec08000)
Note that the BAR seems to have high address bits hardwired to fec0.
And device :00:04.0 is
00:04.0 System peripheral: Siemens Nixdorf AG FSC Multiprocessor Interrupt
Controller (rev 02)
I'd guess that when we try to reassign this resource, PCI interrupts might
just stop working. This could explain SCSI timeouts and other weird things.
Cc: Wolfgang Erig <[EMAIL PROTECTED]>
Cc: Chuck Ebbert <[EMAIL PROTECTED]>
Cc: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
arch/i386/pci/fixup.c | 11 +++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c
index b62eafb..b95b429 100644
--- a/arch/i386/pci/fixup.c
+++ b/arch/i386/pci/fixup.c
@@ -436,3 +436,14 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_CYRIX,
PCI_DEVICE_ID_CYRIX_5530_LEGACY,
pci_early_fixup_cyrix_5530);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY,
pci_early_fixup_cyrix_5530);
+
+/*
+ * Siemens Nixdorf AG FSC Multiprocessor Interrupt Controller:
+ * prevent update of the BAR0, which doesn't look like a normal BAR.
+ */
+static void __devinit pci_siemens_interrupt_controller(struct pci_dev *dev)
+{
+ dev->resource[0].flags |= IORESOURCE_PCI_FIXED;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015,
+ pci_siemens_interrupt_controller);
--
1.5.2
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[PATCH 4/5] PCI: i386: fixup for Siemens Nixdorf AG FSC Multiprocessor Interrupt Controllers
From: Ivan Kokshaysky [EMAIL PROTECTED]
Wolfgang gets:
PCI: Cannot allocate resource region 0 of device :00:04.0
PCI: Error while updating region :00:04.0/0 (a8008000 != fec08000)
Note that the BAR seems to have high address bits hardwired to fec0.
And device :00:04.0 is
00:04.0 System peripheral: Siemens Nixdorf AG FSC Multiprocessor Interrupt
Controller (rev 02)
I'd guess that when we try to reassign this resource, PCI interrupts might
just stop working. This could explain SCSI timeouts and other weird things.
Cc: Wolfgang Erig [EMAIL PROTECTED]
Cc: Chuck Ebbert [EMAIL PROTECTED]
Cc: Andi Kleen [EMAIL PROTECTED]
Signed-off-by: Andrew Morton [EMAIL PROTECTED]
Signed-off-by: Greg Kroah-Hartman [EMAIL PROTECTED]
---
arch/i386/pci/fixup.c | 11 +++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c
index b62eafb..b95b429 100644
--- a/arch/i386/pci/fixup.c
+++ b/arch/i386/pci/fixup.c
@@ -436,3 +436,14 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_CYRIX,
PCI_DEVICE_ID_CYRIX_5530_LEGACY,
pci_early_fixup_cyrix_5530);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY,
pci_early_fixup_cyrix_5530);
+
+/*
+ * Siemens Nixdorf AG FSC Multiprocessor Interrupt Controller:
+ * prevent update of the BAR0, which doesn't look like a normal BAR.
+ */
+static void __devinit pci_siemens_interrupt_controller(struct pci_dev *dev)
+{
+ dev-resource[0].flags |= IORESOURCE_PCI_FIXED;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015,
+ pci_siemens_interrupt_controller);
--
1.5.2
-
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
